I did and unfortunately, it was of little help. Ifanything though, it made the lockup more consistent. Thethree times I tried to boot with nmi_watchdog=1, it lockedup when starting SpamAssassin. Nothing special about thatprocess but just above that it started the hotplugsubsystem which I use to automatically insert various usbdrivers as needed. Could that have anything to do with it?

Shane

Btw, to clarify, when the lockup occurs with nmi_watchdog,no oops gets printed.